Quantitative Aptitude - Arithmetic Ability Questions

The mean score in a test of the 10 boys in a class was 15 while the overall mean of the 25 students in the class was 16.2. What was the mean score of the girls?

The salary of a person is reduced by 20% . To restore the previous salary, his present salary is to be increased by

If selling price is Rs. 72 and Gain percentage = 20%, calculate the Cost Price.

Coefficient of x2 in (x + 7)(5 - 3x)(3x - 6) is

Find the value of p if ­-3x -­ 11, x + p and 5x + 7 are in arithmetic progression.

What is the total number of points in the plane of triangle ABC which is equidistant from the vertices of the triangle?

In the following question, four number pairs are given. The number on left side of (–) is related to the number of the right side of (–) with some Logic/Rule/Relation. Three are similar on basis of same Logic/Rule/Relation. Select the odd one out from the given alternatives.

If a3 + b3 + c3 - 3abc = 0, then the value of a2/bc + b2/ac - 3.